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[thirdparty/openssl.git] / ssl / ssl3.h
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d02b48c6 1/* ssl/ssl3.h */
58964a49 2/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
d02b48c6
RE		 3 * All rights reserved.
4 *
5 * This package is an SSL implementation written
6 * by Eric Young (eay@cryptsoft.com).
7 * The implementation was written so as to conform with Netscapes SSL.
8 *
9 * This library is free for commercial and non-commercial use as long as
10 * the following conditions are aheared to. The following conditions
11 * apply to all code found in this distribution, be it the RC4, RSA,
12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
13 * included with this distribution is covered by the same copyright terms
14 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
15 *
16 * Copyright remains Eric Young's, and as such any Copyright notices in
17 * the code are not to be removed.
18 * If this package is used in a product, Eric Young should be given attribution
19 * as the author of the parts of the library used.
20 * This can be in the form of a textual message at program startup or
21 * in documentation (online or textual) provided with the package.
22 *
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
25 * are met:
26 * 1. Redistributions of source code must retain the copyright
27 * notice, this list of conditions and the following disclaimer.
28 * 2. Redistributions in binary form must reproduce the above copyright
29 * notice, this list of conditions and the following disclaimer in the
30 * documentation and/or other materials provided with the distribution.
31 * 3. All advertising materials mentioning features or use of this software
32 * must display the following acknowledgement:
33 * "This product includes cryptographic software written by
34 * Eric Young (eay@cryptsoft.com)"
35 * The word 'cryptographic' can be left out if the rouines from the library
36 * being used are not cryptographic related :-).
37 * 4. If you include any Windows specific code (or a derivative thereof) from
38 * the apps directory (application code) you must include an acknowledgement:
39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
40 *
41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
51 * SUCH DAMAGE.
52 *
53 * The licence and distribution terms for any publically available version or
54 * derivative of this code cannot be changed. i.e. this code cannot simply be
55 * copied and put under another distribution licence
56 * [including the GNU Public Licence.]
57 */
82b0bf0b
BM		 58/* ====================================================================
59 * Copyright (c) 1998-2002 The OpenSSL Project. All rights reserved.
60 *
61 * Redistribution and use in source and binary forms, with or without
62 * modification, are permitted provided that the following conditions
63 * are met:
64 *
65 * 1. Redistributions of source code must retain the above copyright
66 * notice, this list of conditions and the following disclaimer.
67 *
68 * 2. Redistributions in binary form must reproduce the above copyright
69 * notice, this list of conditions and the following disclaimer in
70 * the documentation and/or other materials provided with the
71 * distribution.
72 *
73 * 3. All advertising materials mentioning features or use of this
74 * software must display the following acknowledgment:
75 * "This product includes software developed by the OpenSSL Project
76 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
77 *
78 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
79 * endorse or promote products derived from this software without
80 * prior written permission. For written permission, please contact
81 * openssl-core@openssl.org.
82 *
83 * 5. Products derived from this software may not be called "OpenSSL"
84 * nor may "OpenSSL" appear in their names without prior written
85 * permission of the OpenSSL Project.
86 *
87 * 6. Redistributions of any form whatsoever must retain the following
88 * acknowledgment:
89 * "This product includes software developed by the OpenSSL Project
90 * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
91 *
92 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
93 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
94 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
95 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
96 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
97 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
98 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
99 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
100 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
101 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
102 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
103 * OF THE POSSIBILITY OF SUCH DAMAGE.
104 * ====================================================================
105 *
106 * This product includes cryptographic software written by Eric Young
107 * (eay@cryptsoft.com). This product includes software written by Tim
108 * Hudson (tjh@cryptsoft.com).
109 *
110 */
ea262260
BM		 111/* ====================================================================
112 * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
113 * ECC cipher suite support in OpenSSL originally developed by
114 * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project.
115 */
d02b48c6
RE		 116
117#ifndef HEADER_SSL3_H
118#define HEADER_SSL3_H
119
cf1b7d96 120#ifndef OPENSSL_NO_COMP
ef33b970
RL		 121#include <openssl/comp.h>
122#endif
ec577822 123#include <openssl/buffer.h>
0b86eb3e
BM		 124#include <openssl/evp.h>
125#include <openssl/ssl.h>
d02b48c6
RE		 126
127#ifdef __cplusplus
128extern "C" {
129#endif
130
10f99d7b 131/* Magic Cipher Suite Value. NB: bogus value used for testing */
67556483 132#ifndef SSL3_CK_MCSV
10f99d7b 133#define SSL3_CK_MCSV 0x03000FEC
67556483 134#endif
10f99d7b 135
d02b48c6
RE		 136#define SSL3_CK_RSA_NULL_MD5 0x03000001
137#define SSL3_CK_RSA_NULL_SHA 0x03000002
138#define SSL3_CK_RSA_RC4_40_MD5 0x03000003
139#define SSL3_CK_RSA_RC4_128_MD5 0x03000004
140#define SSL3_CK_RSA_RC4_128_SHA 0x03000005
141#define SSL3_CK_RSA_RC2_40_MD5 0x03000006
142#define SSL3_CK_RSA_IDEA_128_SHA 0x03000007
143#define SSL3_CK_RSA_DES_40_CBC_SHA 0x03000008
144#define SSL3_CK_RSA_DES_64_CBC_SHA 0x03000009
145#define SSL3_CK_RSA_DES_192_CBC3_SHA 0x0300000A
146
147#define SSL3_CK_DH_DSS_DES_40_CBC_SHA 0x0300000B
148#define SSL3_CK_DH_DSS_DES_64_CBC_SHA 0x0300000C
149#define SSL3_CK_DH_DSS_DES_192_CBC3_SHA 0x0300000D
150#define SSL3_CK_DH_RSA_DES_40_CBC_SHA 0x0300000E
151#define SSL3_CK_DH_RSA_DES_64_CBC_SHA 0x0300000F
152#define SSL3_CK_DH_RSA_DES_192_CBC3_SHA 0x03000010
153
154#define SSL3_CK_EDH_DSS_DES_40_CBC_SHA 0x03000011
155#define SSL3_CK_EDH_DSS_DES_64_CBC_SHA 0x03000012
156#define SSL3_CK_EDH_DSS_DES_192_CBC3_SHA 0x03000013
157#define SSL3_CK_EDH_RSA_DES_40_CBC_SHA 0x03000014
158#define SSL3_CK_EDH_RSA_DES_64_CBC_SHA 0x03000015
159#define SSL3_CK_EDH_RSA_DES_192_CBC3_SHA 0x03000016
160
161#define SSL3_CK_ADH_RC4_40_MD5 0x03000017
162#define SSL3_CK_ADH_RC4_128_MD5 0x03000018
163#define SSL3_CK_ADH_DES_40_CBC_SHA 0x03000019
164#define SSL3_CK_ADH_DES_64_CBC_SHA 0x0300001A
58964a49 165#define SSL3_CK_ADH_DES_192_CBC_SHA 0x0300001B
d02b48c6 166
89bbe14c
BM		 167#if 0
168 #define SSL3_CK_FZA_DMS_NULL_SHA 0x0300001C
169 #define SSL3_CK_FZA_DMS_FZA_SHA 0x0300001D
170 #if 0 /* Because it clashes with KRB5, is never used any more, and is safe
171 to remove according to David Hopwood <david.hopwood@zetnet.co.uk>
172 of the ietf-tls list */
173 #define SSL3_CK_FZA_DMS_RC4_SHA 0x0300001E
174 #endif
7ba3a4c3 175#endif
d02b48c6 176
f9b3bff6
RL		 177/* VRS Additional Kerberos5 entries
178 */
7ba3a4c3
RL		 179#define SSL3_CK_KRB5_DES_64_CBC_SHA 0x0300001E
180#define SSL3_CK_KRB5_DES_192_CBC3_SHA 0x0300001F
181#define SSL3_CK_KRB5_RC4_128_SHA 0x03000020
182#define SSL3_CK_KRB5_IDEA_128_CBC_SHA 0x03000021
183#define SSL3_CK_KRB5_DES_64_CBC_MD5 0x03000022
ef0baf60 184#define SSL3_CK_KRB5_DES_192_CBC3_MD5 0x03000023
7ba3a4c3 185#define SSL3_CK_KRB5_RC4_128_MD5 0x03000024
ef0baf60 186#define SSL3_CK_KRB5_IDEA_128_CBC_MD5 0x03000025
7ba3a4c3
RL		 187
188#define SSL3_CK_KRB5_DES_40_CBC_SHA 0x03000026
189#define SSL3_CK_KRB5_RC2_40_CBC_SHA 0x03000027
190#define SSL3_CK_KRB5_RC4_40_SHA 0x03000028
191#define SSL3_CK_KRB5_DES_40_CBC_MD5 0x03000029
192#define SSL3_CK_KRB5_RC2_40_CBC_MD5 0x0300002A
193#define SSL3_CK_KRB5_RC4_40_MD5 0x0300002B
f9b3bff6 194
d02b48c6
RE		 195#define SSL3_TXT_RSA_NULL_MD5 "NULL-MD5"
196#define SSL3_TXT_RSA_NULL_SHA "NULL-SHA"
197#define SSL3_TXT_RSA_RC4_40_MD5 "EXP-RC4-MD5"
198#define SSL3_TXT_RSA_RC4_128_MD5 "RC4-MD5"
199#define SSL3_TXT_RSA_RC4_128_SHA "RC4-SHA"
200#define SSL3_TXT_RSA_RC2_40_MD5 "EXP-RC2-CBC-MD5"
58964a49 201#define SSL3_TXT_RSA_IDEA_128_SHA "IDEA-CBC-SHA"
d02b48c6
RE		 202#define SSL3_TXT_RSA_DES_40_CBC_SHA "EXP-DES-CBC-SHA"
203#define SSL3_TXT_RSA_DES_64_CBC_SHA "DES-CBC-SHA"
204#define SSL3_TXT_RSA_DES_192_CBC3_SHA "DES-CBC3-SHA"
205
206#define SSL3_TXT_DH_DSS_DES_40_CBC_SHA "EXP-DH-DSS-DES-CBC-SHA"
207#define SSL3_TXT_DH_DSS_DES_64_CBC_SHA "DH-DSS-DES-CBC-SHA"
208#define SSL3_TXT_DH_DSS_DES_192_CBC3_SHA "DH-DSS-DES-CBC3-SHA"
209#define SSL3_TXT_DH_RSA_DES_40_CBC_SHA "EXP-DH-RSA-DES-CBC-SHA"
210#define SSL3_TXT_DH_RSA_DES_64_CBC_SHA "DH-RSA-DES-CBC-SHA"
211#define SSL3_TXT_DH_RSA_DES_192_CBC3_SHA "DH-RSA-DES-CBC3-SHA"
212
213#define SSL3_TXT_EDH_DSS_DES_40_CBC_SHA "EXP-EDH-DSS-DES-CBC-SHA"
214#define SSL3_TXT_EDH_DSS_DES_64_CBC_SHA "EDH-DSS-DES-CBC-SHA"
215#define SSL3_TXT_EDH_DSS_DES_192_CBC3_SHA "EDH-DSS-DES-CBC3-SHA"
58964a49 216#define SSL3_TXT_EDH_RSA_DES_40_CBC_SHA "EXP-EDH-RSA-DES-CBC-SHA"
d02b48c6
RE		 217#define SSL3_TXT_EDH_RSA_DES_64_CBC_SHA "EDH-RSA-DES-CBC-SHA"
218#define SSL3_TXT_EDH_RSA_DES_192_CBC3_SHA "EDH-RSA-DES-CBC3-SHA"
219
220#define SSL3_TXT_ADH_RC4_40_MD5 "EXP-ADH-RC4-MD5"
221#define SSL3_TXT_ADH_RC4_128_MD5 "ADH-RC4-MD5"
222#define SSL3_TXT_ADH_DES_40_CBC_SHA "EXP-ADH-DES-CBC-SHA"
223#define SSL3_TXT_ADH_DES_64_CBC_SHA "ADH-DES-CBC-SHA"
58964a49 224#define SSL3_TXT_ADH_DES_192_CBC_SHA "ADH-DES-CBC3-SHA"
d02b48c6 225
89bbe14c
BM		 226#if 0
227 #define SSL3_TXT_FZA_DMS_NULL_SHA "FZA-NULL-SHA"
228 #define SSL3_TXT_FZA_DMS_FZA_SHA "FZA-FZA-CBC-SHA"
229 #define SSL3_TXT_FZA_DMS_RC4_SHA "FZA-RC4-SHA"
230#endif
d02b48c6 231
7ba3a4c3
RL		 232#define SSL3_TXT_KRB5_DES_64_CBC_SHA "KRB5-DES-CBC-SHA"
233#define SSL3_TXT_KRB5_DES_192_CBC3_SHA "KRB5-DES-CBC3-SHA"
234#define SSL3_TXT_KRB5_RC4_128_SHA "KRB5-RC4-SHA"
235#define SSL3_TXT_KRB5_IDEA_128_CBC_SHA "KRB5-IDEA-CBC-SHA"
236#define SSL3_TXT_KRB5_DES_64_CBC_MD5 "KRB5-DES-CBC-MD5"
28c8a911 237#define SSL3_TXT_KRB5_DES_192_CBC3_MD5 "KRB5-DES-CBC3-MD5"
7ba3a4c3 238#define SSL3_TXT_KRB5_RC4_128_MD5 "KRB5-RC4-MD5"
28c8a911 239#define SSL3_TXT_KRB5_IDEA_128_CBC_MD5 "KRB5-IDEA-CBC-MD5"
7ba3a4c3
RL		 240
241#define SSL3_TXT_KRB5_DES_40_CBC_SHA "EXP-KRB5-DES-CBC-SHA"
242#define SSL3_TXT_KRB5_RC2_40_CBC_SHA "EXP-KRB5-RC2-CBC-SHA"
243#define SSL3_TXT_KRB5_RC4_40_SHA "EXP-KRB5-RC4-SHA"
244#define SSL3_TXT_KRB5_DES_40_CBC_MD5 "EXP-KRB5-DES-CBC-MD5"
31be2daa 245#define SSL3_TXT_KRB5_RC2_40_CBC_MD5 "EXP-KRB5-RC2-CBC-MD5"
7ba3a4c3
RL		 246#define SSL3_TXT_KRB5_RC4_40_MD5 "EXP-KRB5-RC4-MD5"
247
d02b48c6
RE		 248#define SSL3_SSL_SESSION_ID_LENGTH 32
249#define SSL3_MAX_SSL_SESSION_ID_LENGTH 32
250
251#define SSL3_MASTER_SECRET_SIZE 48
252#define SSL3_RANDOM_SIZE 32
253#define SSL3_SESSION_ID_SIZE 32
254#define SSL3_RT_HEADER_LENGTH 5
255
a4d64c7f
AP		 256#ifndef SSL3_ALIGN_PAYLOAD
257 /* Some will argue that this increases memory footprint, but it's
258 * not actually true. Point is that malloc has to return at least
259 * 64-bit aligned pointers, meaning that allocating 5 bytes wastes
260 * 3 bytes in either case. Suggested pre-gaping simply moves these
261 * wasted bytes from the end of allocated region to its front,
262 * but makes data payload aligned, which improves performance:-) */
263# define SSL3_ALIGN_PAYLOAD 8
264#else
265# if (SSL3_ALIGN_PAYLOAD&(SSL3_ALIGN_PAYLOAD-1))!=0
266# error "insane SSL3_ALIGN_PAYLOAD"
267# undef SSL3_ALIGN_PAYLOAD
268# endif
269#endif
270
566dda07 271/* This is the maximum MAC (digest) size used by the SSL library.
a4d64c7f
AP		 272 * Currently maximum of 20 is used by SHA1, but we reserve for
273 * future extension for 512-bit hashes.
566dda07
DSH		 274 */
275
a4d64c7f 276#define SSL3_RT_MAX_MD_SIZE 64
566dda07
DSH		 277
278/* Maximum block size used in all ciphersuites. Currently 16 for AES.
279 */
280
281#define SSL_RT_MAX_CIPHER_BLOCK_SIZE 16
282
d02b48c6 283#define SSL3_RT_MAX_EXTRA (16384)
d02b48c6 284
566dda07 285/* Maximum plaintext length: defined by SSL/TLS standards */
d02b48c6 286#define SSL3_RT_MAX_PLAIN_LENGTH 16384
566dda07
DSH		 287/* Maximum compression overhead: defined by SSL/TLS standards */
288#define SSL3_RT_MAX_COMPRESSED_OVERHEAD 1024
289
290/* The standards give a maximum encryption overhead of 1024 bytes.
291 * In practice the value is lower than this. The overhead is the maximum
292 * number of padding bytes (256) plus the mac size.
293 */
294#define SSL3_RT_MAX_ENCRYPTED_OVERHEAD (256 + SSL3_RT_MAX_MD_SIZE)
295
296/* OpenSSL currently only uses a padding length of at most one block so
297 * the send overhead is smaller.
298 */
299
300#define SSL3_RT_SEND_MAX_ENCRYPTED_OVERHEAD \
301 (SSL_RT_MAX_CIPHER_BLOCK_SIZE + SSL3_RT_MAX_MD_SIZE)
302
303/* If compression isn't used don't include the compression overhead */
304
09b6c2ef 305#ifdef OPENSSL_NO_COMP
566dda07 306#define SSL3_RT_MAX_COMPRESSED_LENGTH SSL3_RT_MAX_PLAIN_LENGTH
09b6c2ef 307#else
566dda07
DSH		 308#define SSL3_RT_MAX_COMPRESSED_LENGTH \
309 (SSL3_RT_MAX_PLAIN_LENGTH+SSL3_RT_MAX_COMPRESSED_OVERHEAD)
09b6c2ef 310#endif
566dda07
DSH		 311#define SSL3_RT_MAX_ENCRYPTED_LENGTH \
312 (SSL3_RT_MAX_ENCRYPTED_OVERHEAD+SSL3_RT_MAX_COMPRESSED_LENGTH)
313#define SSL3_RT_MAX_PACKET_SIZE \
314 (SSL3_RT_MAX_ENCRYPTED_LENGTH+SSL3_RT_HEADER_LENGTH)
d02b48c6 315
c44f7540
BM		 316#define SSL3_MD_CLIENT_FINISHED_CONST "\x43\x4C\x4E\x54"
317#define SSL3_MD_SERVER_FINISHED_CONST "\x53\x52\x56\x52"
d02b48c6
RE		 318
319#define SSL3_VERSION 0x0300
320#define SSL3_VERSION_MAJOR 0x03
321#define SSL3_VERSION_MINOR 0x00
322
323#define SSL3_RT_CHANGE_CIPHER_SPEC 20
324#define SSL3_RT_ALERT 21
325#define SSL3_RT_HANDSHAKE 22
326#define SSL3_RT_APPLICATION_DATA 23
327
328#define SSL3_AL_WARNING 1
329#define SSL3_AL_FATAL 2
330
331#define SSL3_AD_CLOSE_NOTIFY 0
332#define SSL3_AD_UNEXPECTED_MESSAGE 10 /* fatal */
333#define SSL3_AD_BAD_RECORD_MAC 20 /* fatal */
334#define SSL3_AD_DECOMPRESSION_FAILURE 30 /* fatal */
335#define SSL3_AD_HANDSHAKE_FAILURE 40 /* fatal */
336#define SSL3_AD_NO_CERTIFICATE 41
337#define SSL3_AD_BAD_CERTIFICATE 42
338#define SSL3_AD_UNSUPPORTED_CERTIFICATE 43
339#define SSL3_AD_CERTIFICATE_REVOKED 44
340#define SSL3_AD_CERTIFICATE_EXPIRED 45
341#define SSL3_AD_CERTIFICATE_UNKNOWN 46
342#define SSL3_AD_ILLEGAL_PARAMETER 47 /* fatal */
343
344typedef struct ssl3_record_st
345 {
b35e9050
BM		 346/*r */ int type; /* type of record */
347/*rw*/ unsigned int length; /* How many bytes available */
348/*r */ unsigned int off; /* read/write offset into 'buf' */
349/*rw*/ unsigned char *data; /* pointer to the record data */
350/*rw*/ unsigned char *input; /* where the decode bytes are */
351/*r */ unsigned char *comp; /* only used with decompression - malloc()ed */
36d16f8e 352/*r */ unsigned long epoch; /* epoch number, needed by DTLS1 */
dffdb56b 353/*r */ unsigned char seq_num[8]; /* sequence number, needed by DTLS1 */
d02b48c6
RE		 354 } SSL3_RECORD;
355
356typedef struct ssl3_buffer_st
357 {
82b0bf0b
BM		 358 unsigned char *buf; /* at least SSL3_RT_MAX_PACKET_SIZE bytes,
359 * see ssl3_setup_buffers() */
360 size_t len; /* buffer size */
361 int offset; /* where to 'copy from' */
362 int left; /* how many bytes left */
d02b48c6
RE		 363 } SSL3_BUFFER;
364
d02b48c6
RE		 365#define SSL3_CT_RSA_SIGN 1
366#define SSL3_CT_DSS_SIGN 2
367#define SSL3_CT_RSA_FIXED_DH 3
368#define SSL3_CT_DSS_FIXED_DH 4
369#define SSL3_CT_RSA_EPHEMERAL_DH 5
370#define SSL3_CT_DSS_EPHEMERAL_DH 6
371#define SSL3_CT_FORTEZZA_DMS 20
ea262260
BM		 372/* SSL3_CT_NUMBER is used to size arrays and it must be large
373 * enough to contain all of the cert types defined either for
374 * SSLv3 and TLSv1.
375 */
cc1cb996 376#define SSL3_CT_NUMBER 9
ea262260 377
d02b48c6
RE		 378
379#define SSL3_FLAGS_NO_RENEGOTIATE_CIPHERS 0x0001
380#define SSL3_FLAGS_DELAY_CLIENT_FINISHED 0x0002
381#define SSL3_FLAGS_POP_BUFFER 0x0004
dfeab068 382#define TLS1_FLAGS_TLS_PADDING_BUG 0x0008
bfd502f0 383#define TLS1_FLAGS_SKIP_CERT_VERIFY 0x0010
58964a49 384
b35e9050 385typedef struct ssl3_state_st
d02b48c6
RE		 386 {
387 long flags;
388 int delay_buf_pop_ret;
389
390 unsigned char read_sequence[8];
b948e2c5 391 int read_mac_secret_size;
d02b48c6
RE		 392 unsigned char read_mac_secret[EVP_MAX_MD_SIZE];
393 unsigned char write_sequence[8];
b948e2c5 394 int write_mac_secret_size;
d02b48c6
RE		 395 unsigned char write_mac_secret[EVP_MAX_MD_SIZE];
396
397 unsigned char server_random[SSL3_RANDOM_SIZE];
398 unsigned char client_random[SSL3_RANDOM_SIZE];
399
82b0bf0b
BM		 400 /* flags for countermeasure against known-IV weakness */
401 int need_empty_fragments;
402 int empty_fragment_done;
403
566dda07
DSH		 404 /* The value of 'extra' when the buffers were initialized */
405 int init_extra;
406
d02b48c6
RE		 407 SSL3_BUFFER rbuf; /* read IO goes into here */
408 SSL3_BUFFER wbuf; /* write IO goes into here */
b35e9050 409
d02b48c6
RE		 410 SSL3_RECORD rrec; /* each decoded record goes in here */
411 SSL3_RECORD wrec; /* goes out from here */
b35e9050
BM		 412
413 /* storage for Alert/Handshake protocol data received but not
414 * yet processed by ssl3_read_bytes: */
415 unsigned char alert_fragment[2];
e5599db4 416 unsigned int alert_fragment_len;
b35e9050 417 unsigned char handshake_fragment[4];
e5599db4 418 unsigned int handshake_fragment_len;
d02b48c6
RE		 419
420 /* partial write - check the numbers match */
421 unsigned int wnum; /* number of bytes sent so far */
422 int wpend_tot; /* number bytes written */
423 int wpend_type;
424 int wpend_ret; /* number of bytes submitted */
61f5b6f3 425 const unsigned char *wpend_buf;
d02b48c6
RE		 426
427 /* used during startup, digest all incoming/outgoing packets */
81025661
DSH		 428 BIO *handshake_buffer;
429 /* When set of handshake digests is determined, buffer is hashed
430 * and freed and MD_CTX-es for all required digests are stored in
431 * this array */
432 EVP_MD_CTX **handshake_dgst;
d02b48c6
RE		 433 /* this is set whenerver we see a change_cipher_spec message
434 * come in when we are not looking for one */
435 int change_cipher_spec;
436
437 int warn_alert;
438 int fatal_alert;
657e60fa 439 /* we allow one fatal and one warning alert to be outstanding,
d02b48c6
RE		 440 * send close alert via the warning alert */
441 int alert_dispatch;
61f5b6f3 442 unsigned char send_alert[2];
d02b48c6 443
58964a49
RE		 444 /* This flag is set when we should renegotiate ASAP, basically when
445 * there is no more data in the read or write buffers */
446 int renegotiate;
447 int total_renegotiations;
448 int num_renegotiations;
449
450 int in_read_app_data;
451
761772d7
BM		 452 /* Opaque PRF input as used for the current handshake.
453 * These fields are used only if TLSEXT_TYPE_opaque_prf_input is defined
454 * (otherwise, they are merely present to improve binary compatibility) */
455 void *client_opaque_prf_input;
456 size_t client_opaque_prf_input_len;
457 void *server_opaque_prf_input;
458 size_t server_opaque_prf_input_len;
459
d02b48c6 460 struct {
f2d9a32c
BM		 461 /* actually only needs to be 16+20 */
462 unsigned char cert_verify_md[EVP_MAX_MD_SIZE*2];
463
464 /* actually only need to be 16+20 for SSLv3 and 12 for TLS */
9fb617e2
BM		 465 unsigned char finish_md[EVP_MAX_MD_SIZE*2];
466 int finish_md_len;
467 unsigned char peer_finish_md[EVP_MAX_MD_SIZE*2];
468 int peer_finish_md_len;
d02b48c6
RE		 469
470 unsigned long message_size;
471 int message_type;
472
473 /* used to hold the new cipher we are going to use */
babb3798 474 const SSL_CIPHER *new_cipher;
cf1b7d96 475#ifndef OPENSSL_NO_DH
d02b48c6 476 DH *dh;
79df9d62 477#endif
ea262260
BM		 478
479#ifndef OPENSSL_NO_ECDH
480 EC_KEY *ecdh; /* holds short lived ECDH key */
481#endif
482
d02b48c6
RE		 483 /* used when SSL_ST_FLUSH_DATA is entered */
484 int next_state;
485
486 int reuse_message;
487
488 /* used for certificate requests */
489 int cert_req;
490 int ctype_num;
491 char ctype[SSL3_CT_NUMBER];
f73e07cf 492 STACK_OF(X509_NAME) *ca_names;
d02b48c6
RE		 493
494 int use_rsa_tmp;
495
496 int key_block_length;
497 unsigned char *key_block;
498
e778802f
BL		 499 const EVP_CIPHER *new_sym_enc;
500 const EVP_MD *new_hash;
b948e2c5
DSH		 501 int new_mac_pkey_type;
502 int new_mac_secret_size;
cf1b7d96 503#ifndef OPENSSL_NO_COMP
e778802f 504 const SSL_COMP *new_compression;
dfeab068
RE		 505#else
506 char *new_compression;
507#endif
58964a49 508 int cert_request;
d02b48c6 509 } tmp;
413c4f45 510
bc9058d0
DSH		 511 /* Connection binding to prevent renegotiation attacks */
512 unsigned char previous_client_finished[EVP_MAX_MD_SIZE];
513 unsigned char previous_client_finished_len;
514 unsigned char previous_server_finished[EVP_MAX_MD_SIZE];
515 unsigned char previous_server_finished_len;
516 int send_connection_binding; /* TODOEKR */
b35e9050 517 } SSL3_STATE;
d02b48c6 518
36d16f8e 519
d02b48c6
RE		 520/* SSLv3 */
521/*client */
522/* extra state */
523#define SSL3_ST_CW_FLUSH (0x100|SSL_ST_CONNECT)
524/* write to server */
525#define SSL3_ST_CW_CLNT_HELLO_A (0x110|SSL_ST_CONNECT)
526#define SSL3_ST_CW_CLNT_HELLO_B (0x111|SSL_ST_CONNECT)
527/* read from server */
528#define SSL3_ST_CR_SRVR_HELLO_A (0x120|SSL_ST_CONNECT)
529#define SSL3_ST_CR_SRVR_HELLO_B (0x121|SSL_ST_CONNECT)
36d16f8e
BL		 530#define DTLS1_ST_CR_HELLO_VERIFY_REQUEST_A (0x126|SSL_ST_CONNECT)
531#define DTLS1_ST_CR_HELLO_VERIFY_REQUEST_B (0x127|SSL_ST_CONNECT)
d02b48c6
RE		 532#define SSL3_ST_CR_CERT_A (0x130|SSL_ST_CONNECT)
533#define SSL3_ST_CR_CERT_B (0x131|SSL_ST_CONNECT)
534#define SSL3_ST_CR_KEY_EXCH_A (0x140|SSL_ST_CONNECT)
535#define SSL3_ST_CR_KEY_EXCH_B (0x141|SSL_ST_CONNECT)
536#define SSL3_ST_CR_CERT_REQ_A (0x150|SSL_ST_CONNECT)
537#define SSL3_ST_CR_CERT_REQ_B (0x151|SSL_ST_CONNECT)
538#define SSL3_ST_CR_SRVR_DONE_A (0x160|SSL_ST_CONNECT)
539#define SSL3_ST_CR_SRVR_DONE_B (0x161|SSL_ST_CONNECT)
540/* write to server */
541#define SSL3_ST_CW_CERT_A (0x170|SSL_ST_CONNECT)
542#define SSL3_ST_CW_CERT_B (0x171|SSL_ST_CONNECT)
543#define SSL3_ST_CW_CERT_C (0x172|SSL_ST_CONNECT)
544#define SSL3_ST_CW_CERT_D (0x173|SSL_ST_CONNECT)
545#define SSL3_ST_CW_KEY_EXCH_A (0x180|SSL_ST_CONNECT)
546#define SSL3_ST_CW_KEY_EXCH_B (0x181|SSL_ST_CONNECT)
547#define SSL3_ST_CW_CERT_VRFY_A (0x190|SSL_ST_CONNECT)
548#define SSL3_ST_CW_CERT_VRFY_B (0x191|SSL_ST_CONNECT)
549#define SSL3_ST_CW_CHANGE_A (0x1A0|SSL_ST_CONNECT)
550#define SSL3_ST_CW_CHANGE_B (0x1A1|SSL_ST_CONNECT)
551#define SSL3_ST_CW_FINISHED_A (0x1B0|SSL_ST_CONNECT)
552#define SSL3_ST_CW_FINISHED_B (0x1B1|SSL_ST_CONNECT)
553/* read from server */
554#define SSL3_ST_CR_CHANGE_A (0x1C0|SSL_ST_CONNECT)
555#define SSL3_ST_CR_CHANGE_B (0x1C1|SSL_ST_CONNECT)
556#define SSL3_ST_CR_FINISHED_A (0x1D0|SSL_ST_CONNECT)
557#define SSL3_ST_CR_FINISHED_B (0x1D1|SSL_ST_CONNECT)
6434abbf
DSH		 558#define SSL3_ST_CR_SESSION_TICKET_A (0x1E0|SSL_ST_CONNECT)
559#define SSL3_ST_CR_SESSION_TICKET_B (0x1E1|SSL_ST_CONNECT)
67c8e7f4
DSH		 560#define SSL3_ST_CR_CERT_STATUS_A (0x1F0|SSL_ST_CONNECT)
561#define SSL3_ST_CR_CERT_STATUS_B (0x1F1|SSL_ST_CONNECT)
d02b48c6
RE		 562
563/* server */
564/* extra state */
565#define SSL3_ST_SW_FLUSH (0x100|SSL_ST_ACCEPT)
566/* read from client */
58964a49 567/* Do not change the number values, they do matter */
d02b48c6
RE		 568#define SSL3_ST_SR_CLNT_HELLO_A (0x110|SSL_ST_ACCEPT)
569#define SSL3_ST_SR_CLNT_HELLO_B (0x111|SSL_ST_ACCEPT)
570#define SSL3_ST_SR_CLNT_HELLO_C (0x112|SSL_ST_ACCEPT)
571/* write to client */
36d16f8e
BL		 572#define DTLS1_ST_SW_HELLO_VERIFY_REQUEST_A (0x113|SSL_ST_ACCEPT)
573#define DTLS1_ST_SW_HELLO_VERIFY_REQUEST_B (0x114|SSL_ST_ACCEPT)
d02b48c6
RE		 574#define SSL3_ST_SW_HELLO_REQ_A (0x120|SSL_ST_ACCEPT)
575#define SSL3_ST_SW_HELLO_REQ_B (0x121|SSL_ST_ACCEPT)
576#define SSL3_ST_SW_HELLO_REQ_C (0x122|SSL_ST_ACCEPT)
577#define SSL3_ST_SW_SRVR_HELLO_A (0x130|SSL_ST_ACCEPT)
578#define SSL3_ST_SW_SRVR_HELLO_B (0x131|SSL_ST_ACCEPT)
579#define SSL3_ST_SW_CERT_A (0x140|SSL_ST_ACCEPT)
580#define SSL3_ST_SW_CERT_B (0x141|SSL_ST_ACCEPT)
581#define SSL3_ST_SW_KEY_EXCH_A (0x150|SSL_ST_ACCEPT)
582#define SSL3_ST_SW_KEY_EXCH_B (0x151|SSL_ST_ACCEPT)
583#define SSL3_ST_SW_CERT_REQ_A (0x160|SSL_ST_ACCEPT)
584#define SSL3_ST_SW_CERT_REQ_B (0x161|SSL_ST_ACCEPT)
585#define SSL3_ST_SW_SRVR_DONE_A (0x170|SSL_ST_ACCEPT)
586#define SSL3_ST_SW_SRVR_DONE_B (0x171|SSL_ST_ACCEPT)
587/* read from client */
588#define SSL3_ST_SR_CERT_A (0x180|SSL_ST_ACCEPT)
589#define SSL3_ST_SR_CERT_B (0x181|SSL_ST_ACCEPT)
590#define SSL3_ST_SR_KEY_EXCH_A (0x190|SSL_ST_ACCEPT)
591#define SSL3_ST_SR_KEY_EXCH_B (0x191|SSL_ST_ACCEPT)
592#define SSL3_ST_SR_CERT_VRFY_A (0x1A0|SSL_ST_ACCEPT)
593#define SSL3_ST_SR_CERT_VRFY_B (0x1A1|SSL_ST_ACCEPT)
594#define SSL3_ST_SR_CHANGE_A (0x1B0|SSL_ST_ACCEPT)
595#define SSL3_ST_SR_CHANGE_B (0x1B1|SSL_ST_ACCEPT)
596#define SSL3_ST_SR_FINISHED_A (0x1C0|SSL_ST_ACCEPT)
597#define SSL3_ST_SR_FINISHED_B (0x1C1|SSL_ST_ACCEPT)
598/* write to client */
599#define SSL3_ST_SW_CHANGE_A (0x1D0|SSL_ST_ACCEPT)
600#define SSL3_ST_SW_CHANGE_B (0x1D1|SSL_ST_ACCEPT)
601#define SSL3_ST_SW_FINISHED_A (0x1E0|SSL_ST_ACCEPT)
602#define SSL3_ST_SW_FINISHED_B (0x1E1|SSL_ST_ACCEPT)
870d6541
DSH		 603#define SSL3_ST_SW_SESSION_TICKET_A (0x1F0|SSL_ST_ACCEPT)
604#define SSL3_ST_SW_SESSION_TICKET_B (0x1F1|SSL_ST_ACCEPT)
67c8e7f4
DSH		 605#define SSL3_ST_SW_CERT_STATUS_A (0x200|SSL_ST_ACCEPT)
606#define SSL3_ST_SW_CERT_STATUS_B (0x201|SSL_ST_ACCEPT)
d02b48c6 607
c51ae173 608#define SSL3_MT_HELLO_REQUEST 0
d02b48c6
RE		 609#define SSL3_MT_CLIENT_HELLO 1
610#define SSL3_MT_SERVER_HELLO 2
6434abbf 611#define SSL3_MT_NEWSESSION_TICKET 4
d02b48c6
RE		 612#define SSL3_MT_CERTIFICATE 11
613#define SSL3_MT_SERVER_KEY_EXCHANGE 12
614#define SSL3_MT_CERTIFICATE_REQUEST 13
615#define SSL3_MT_SERVER_DONE 14
616#define SSL3_MT_CERTIFICATE_VERIFY 15
617#define SSL3_MT_CLIENT_KEY_EXCHANGE 16
618#define SSL3_MT_FINISHED 20
67c8e7f4 619#define SSL3_MT_CERTIFICATE_STATUS 22
36d16f8e
BL		 620#define DTLS1_MT_HELLO_VERIFY_REQUEST 3
621
d02b48c6
RE		 622
623#define SSL3_MT_CCS 1
624
625/* These are used when changing over to a new cipher */
626#define SSL3_CC_READ 0x01
627#define SSL3_CC_WRITE 0x02
628#define SSL3_CC_CLIENT 0x10
629#define SSL3_CC_SERVER 0x20
630#define SSL3_CHANGE_CIPHER_CLIENT_WRITE (SSL3_CC_CLIENT|SSL3_CC_WRITE)
631#define SSL3_CHANGE_CIPHER_SERVER_READ (SSL3_CC_SERVER|SSL3_CC_READ)
632#define SSL3_CHANGE_CIPHER_CLIENT_READ (SSL3_CC_CLIENT|SSL3_CC_READ)
633#define SSL3_CHANGE_CIPHER_SERVER_WRITE (SSL3_CC_SERVER|SSL3_CC_WRITE)
634
635#ifdef __cplusplus
636}
637#endif
638#endif
639
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